Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

44°06.0′N 149°49.4′W

Waves left about 24 Oct 01:12Z, ± 2 h

Placed by 6 buoys, whose own placements lie within 245 nmi of it

Its swell was last measured at 46219 (San Nicolas Island, CA) on 28 Oct 00:00Z; the replay ends there.

Each buoy places the storm from how its swell's period shortened as it arrived: the longest waves travel fastest. Fronts are drawn at deep-water group speeds along great circles, and stop at land. How it is worked out